amorousness vs eros

amorousness and eros both are nouns.

Word	Noun	Adjective	Verb	Adverb
amorousness	Yes	No	No	No
eros	Yes	No	No	No

As nouns, eros is a hypernym of amorousness; that is, eros is a word with a broader meaning than amorousness:

Other hypernyms of amorousness include concupiscence, physical attraction, sexual desire.

amorousness (noun)	eros (noun)
a feeling of love or fondness	a desire for sexual intimacy
the arousal of feelings of sexual desire